Question about BOSS AUDIO SYSTEMS Boss Dd-3 Digital Delay Pedal

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Hi. I have a problem with Boss DD3 Digital delay pedal. Seems the problem is quite a common one but no-one seems to know the cure. The problem - press the footswitch, red LED lights up but there is no echo added to the output signal. Sometimes it starts working on its own, sometimes no amount of unplugging jacks, power leads or depressing the footpedal will induce it to start working as it should! Any ideas, regards, Iain gallagher.

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Posted on Jan 02, 2017

PolyrhythmFX
  • 109 Answers

SOURCE: BOSS DD3 STAYS ON AND WILL NOT TURN OFF

It's supposed to do that. An extra lug on the input jack is connected to the battery and/or power supply's ground.

So the only way to power off any pedal is to disconnect the input jack. If you use a power supply and power multiple pedals you can simply disconnect the power supply to cut power and avoid unplugging each one.

Posted on Oct 09, 2009

PolyrhythmFX
  • 109 Answers

SOURCE: Boss DD3 - LED switches ON but the signal remains dry.

Have you tried a new battery?

If you have experience with electronics then open it up and start testing all the components with a digital multimeter to find the failed component(s).

Unfortunately the newer DD3's are harder to fix then they once were. There is no place to point you other than just to start testing everything. Hard to say what has failed. The signal into the input of the circuit may simply be shorting to the output. Maybe the switch or switching circuit has a fault.

Here is the schematic as a reference: http://www.8bitsindgenug.net/boss_dd2.png

Posted on Dec 29, 2009

Testimonial: "Hi, thanks for your feedback. My DD3 is one of the earlier units (made in Japan). Thanks for the schematic this will be of great help. "

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1 Answer

Why is my vintage boss dd-3 very quiet on the repeats even when level is turned up full?


Assuming you have the feedback level turned up....can you hear any difference at all when adjusting the feedback?

Aug 17, 2012 | BOSS AUDIO SYSTEMS Boss Dd-3 Digital Delay...

1 Answer

My Boss Digital delay pedal won't stay on unless I keep my foot on it.


This is likely a failing switch under the pedal. Either the toggling mechanism is broken in it or if it is a momentary type it probably has "contact bounce" that exceeds the what the de-bounce circuitry can handle.

Mar 08, 2011 | BOSS AUDIO SYSTEMS Boss Dd-3 Digital Delay...

1 Answer

My DD3 pedal doesn't work. Checked the battery and the adapter. The light won't go on it will only light momentarily when I click through the modes. Any help would be appreciated. Greg


Check all connections including the battery clip if you use a battery, and the adapter jack if you use the AC adapter. Also check you guitar cable connections as the pedal turns itself off if the guitar plugs have a loose connection. Make sure the guitar jacks on the sides are tight and don't need tightening. Any of those issues could cause the pedal to operate sporadically or not at all.
It could also be and IC problem internally on the pedal's circuit board, but before you open anything, check all the connections non electrical issues can occur more often on pedals.

Feb 19, 2011 | BOSS AUDIO SYSTEMS Boss Dd-3 Digital Delay...

1 Answer

Low volume, high pith squill


The schematic is here:http://www.vintagesynth.com/roland/xp60.php Take note though that the design was changed for the newer DD3. Here is a link to a forum with links to later DD3 service notes:http://music-electronics-forum.com/t15879/. Start checking transistors at the input. Check voltage readings on pins on the I.C.s to see if they match the supply voltage at IC10 . If you get voltage readings on pins that aren't supposed to have readings there is a good chance that the I.C. you are testing is shorted. Also check the diodes as you proceed.

Jul 26, 2010 | BOSS AUDIO SYSTEMS Boss Dd-3 Digital Delay...

1 Answer

At low input,repeats from dd3 are clean but when guitar is cranked repeats are unpleasantly distorted.How can I cure this?


You are probably overdriving the pedal. Reduce the amplitude INTO the pedal and AMPLIFY it more AFTER the pedal.

When digital conversion is done from the input and the input exceeds the input voltage capabilty of the A-D convertor, it effectively "flattops" just like your overdrive on a guitar amp.

Your guitar may be very "hot" having high output. One needs to keep the signal levels in-bounds of what the hardware can handle at EVERY point.

May 13, 2010 | BOSS AUDIO SYSTEMS Boss Dd-3 Digital Delay...

1 Answer

Boss DD3 - LED switches ON but the signal remains dry.


Have you tried a new battery?

If you have experience with electronics then open it up and start testing all the components with a digital multimeter to find the failed component(s).

Unfortunately the newer DD3's are harder to fix then they once were. There is no place to point you other than just to start testing everything. Hard to say what has failed. The signal into the input of the circuit may simply be shorting to the output. Maybe the switch or switching circuit has a fault.

Here is the schematic as a reference: http://www.8bitsindgenug.net/boss_dd2.png

Dec 29, 2009 | BOSS AUDIO SYSTEMS Boss Dd-3 Digital Delay...

1 Answer

BOSS DD3 STAYS ON AND WILL NOT TURN OFF


It's supposed to do that. An extra lug on the input jack is connected to the battery and/or power supply's ground.

So the only way to power off any pedal is to disconnect the input jack. If you use a power supply and power multiple pedals you can simply disconnect the power supply to cut power and avoid unplugging each one.

Oct 08, 2009 | Boss Music

1 Answer

My Boss DD3 just beeps and nothing else when i turn it on


If you have experience with electronics you could take it apart and use a multimeter. My guess would be one of the delay chips but its something hard to diagnose without taking it apart. An audio tech could help you out. Chances are it would be a pretty cheap fix. Unfortunately Boss pedals are almost entirely surface mount so replacing a component or two takes more skill than the average pedal.

May 16, 2009 | BOSS AUDIO SYSTEMS Boss Dd-3 Digital Delay...

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